An investigation of the size of tissue required for generation of spontaneous network rhythms in an intact hippocampal preparation
Bibliographic record
Abstract
An intact hippocampal preparation in vitro exhibits spontaneous population rhythmic activities of 0.5-4 Hz. Conventionally, rodent hippocampal slices of ≤0.5 mm thickness have been used as a model system for in vitro electrophysiological studies of the hippocampus. However, due to limited network connectivity conventional slices do not consistently exhibit spontaneous population rhythms. Unlike conventional slices, 1 mm thick slices robustly exhibit spontaneous rhythms of 1-4 Hz. It has been suggested that a 1 mm slice may contain the circuitry sufficient for generation of spontaneous hippocampal population rhythms. We investigate this hypothesis using phase lag estimations from simultaneously recorded rhythms in an intact mouse hippocampal preparation. Our results indicate that the sufficient circuitry required for generation of spontaneous hippocampal network rhythms is most likely contained in smaller tissue lengths than 1 mm and may potentially be contained in tissue lengths of 0.5 mm.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".